Large Data Sets: Use base variables or classes? And some binding questions

Carl Banks pavlovevidence at gmail.com
Sat Sep 27 02:53:59 CEST 2008


On Sep 26, 7:43 pm, Steven D'Aprano <st... at REMOVE-THIS-
cybersource.com.au> wrote:
> On Fri, 26 Sep 2008 14:54:36 -0700, Carl Banks wrote:
> > However, it seems from the rest of your comments that speed is your main
> > concern.  Last time someone reported __slots__ didn't make a big
> > difference in access time, but it probably would speed up creating
> > objects a bit.  
>
> Carl probably knows this already, but for the benefit of the Original
> Poster:
>
> __slots__ is intended as a memory optimization, not speed optimization.
> If it speeds up creation, that's a serendipitous side-effect of using
> less memory.

No, it'd be a serendipitous side-effect of not having to take the time
to create a dict object, which is quite a bit more of a direct cause.

It might still end up being slower (creating slot descriptors might
take more time for all I know) but it's more than just an effect of
less memory.

Carl Banks



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